Fall Branch-Greeneville District

Region Central, South Central
Mineral systems
Deposit types
Critical minerals
Other minerals

Information leading to the delineation of this focus area

Basis for focus area Surface outcrops, historical prospects, mined areas.
Identified resources Historical production of barite and zinc.
Production Unknown.
Status Past mining.
Estimated resources Unknown.
Geologic maps Clark and others (1993), scale 1:500,000; Byerly and others (1969), scale 1:24,000; Byerly and Maher (1996), scale 1:24,000; Jewell (2010), scale 1:24,000; Kohl (2002), scale 1:24,000; Lemiszki (2003), scale 1:24,000.
Geophysical data Inadequate aeromagnetic and aeroradiometric coverage.
Favorable rocks and structures Knox Group Upper Ordovician carbonates.
Deposits Fall Branch (MRDS dep_id: 10227452); Group of mines, prospects, and occurrences in a zone that extends 40 miles along bedrock strike and is 2 to 3 miles wide.
Evidence from mineral occurrences MRDS.
Geochemical evidence Documented mineralization (sphalerite, barite, pyrite, chalcopyrite) and trace element analyses.
Geophysical evidence None.
Evidence from other sources None.
Comments According to Maher (1970): "Unresolved geologic problems and the lack of information make any evaluation of the district hazardous.
Cover thickness and description Some open-pit mining; depth to bedrock may be estimated from available water well logs in the area.
Authors Peter J. Lemiszki.
New data needs Geophysical data and geochemical analyses.
Geologic mapping and modeling needs Geologic mapping adequate.
Geophysical survey and modeling needs High resolution geophysical coverage. Note that the timing of the deposits is uncertain; they may have been transported on thrust sheets.
Digital elevation data needs Lidar adequate.